WO2013117417A1 - Bougie de préchauffage à mesure de pression - Google Patents

Bougie de préchauffage à mesure de pression Download PDF

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Publication number
WO2013117417A1
WO2013117417A1 PCT/EP2013/051067 EP2013051067W WO2013117417A1 WO 2013117417 A1 WO2013117417 A1 WO 2013117417A1 EP 2013051067 W EP2013051067 W EP 2013051067W WO 2013117417 A1 WO2013117417 A1 WO 2013117417A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
glow
pressure measuring
glow plug
measuring unit
Prior art date
Application number
PCT/EP2013/051067
Other languages
German (de)
English (en)
Inventor
Holger Scholzen
Wolfgang Koetzle
Janpeter Wolff
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to EP13701423.9A priority Critical patent/EP2812635B1/fr
Priority to JP2014555147A priority patent/JP5893759B2/ja
Priority to CN201380008770.4A priority patent/CN104094062B/zh
Priority to US14/377,771 priority patent/US9541291B2/en
Publication of WO2013117417A1 publication Critical patent/WO2013117417A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
    • F23Q7/001—Glowing plugs for internal-combustion engines
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
    • G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
    • F23Q7/001—Glowing plugs for internal-combustion engines
    • F23Q2007/002—Glowing plugs for internal-combustion engines with sensing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
    • F23Q7/001—Glowing plugs for internal-combustion engines
    • F23Q2007/004—Manufacturing or assembling methods
    • F23Q2007/005—Manufacturing or assembling methods pressure sensors

Definitions

  • the invention relates to a Druckmessglühkerze for insertion into a
  • Cylinder head of an internal combustion engine having the features of the preamble of claim 1.
  • Such Druckmessglühkerze is known from DE 102006008351 AI, in which a glow plug for igniting a combustion mixture of an internal combustion engine and a pressure measuring unit with a pressure sensor for detecting a combustion chamber pressure of the internal combustion engine are arranged in a housing.
  • the glow plug is exposed to the combustion chamber pressure and transmits as
  • Pressure sensor between the acting as a pressure transducer glow pin and a support member is biased by a spring force of a flexurally elastic membrane by means of a clamping sleeve.
  • the clamping sleeve is connected to the housing.
  • the glow plug has a glow current contact for an electrical heating element housed in the glow plug, wherein the glow current contact is contacted with a Glühstromtechnisch.
  • the Glühstromtechnisch is guided through the pressure sensor through to a terminal contact on the housing.
  • the invention with the characterizing features of claim 1 has the advantage that the Glühstromtechnisch is guided outside of the pressure sensor. Thus, the pressure sensor remains unaffected by the contact of the
  • the sleeve-shaped pressure-transmitting element has a radial recess, there is sufficient free space for laterally leading out the glow-current line from the receiving space and for the continuation of the
  • Glühstromtechnisch is contacted with a exposed outside the pressure measuring unit high current contact.
  • the Glühstromtechnisch is guided in the axial direction within the pressure measuring unit on the pressure sensor and introduced by a in a support member for the pressure sensor
  • the exposed high-current contact is expediently formed on a glow module-side end face of a contacting unit.
  • An expedient embodiment of the Druckmessglühkerze is present when the pressure sensor is biased by the spring force of a flexurally elastic membrane, wherein the flexurally elastic membrane by means of a clamping sleeve with a
  • the clamping sleeve in this case has an outer diameter D2, which is smaller than the outer diameter Dl of an outer support portion, so that there is an encircling gap between an inner diameter dl of the housing and the outer diameter D2 of the clamping sleeve.
  • Bias is adjustable for the pressure sensor outside the housing, whereby the mechanical preload of the pressure sensor is not affected in the subsequent assembly steps in assembling the Druckmessglühkerze.
  • Figure 1 is a sectional view through an inventive
  • Figure 2 is an enlarged sectional view through an annealing
  • FIG. 1 A first figure.
  • FIG. 4 shows a partial sectional view of a support element-side end section of a pressure measuring unit according to FIG. 2.
  • the pressure-measuring glow plug illustrated in FIG. 1 combines a conventional glow plug for use in self-igniting internal combustion engines with an additional pressure measuring function of a pressure measuring device for detecting a combustion chamber pressure of the internal combustion engine.
  • the pressure measuring glow plug essentially comprises an annealing and pressure measuring module 11 and a
  • the housing 13 comprises several components
  • Housing parts such as a glow module housing 14, an electronics module housing 15 and a connector housing 16 for an electrical connector 42 for contacting a connector plug, not shown.
  • the glow and pressure measuring module 11 includes the actual components of a glow plug 20 for igniting the internal combustion engine and a pressure measuring unit 30 for combustion chamber pressure measurement.
  • the glow pressure measuring module 11 comprises a glow plug 21 projecting from the glow module housing 14 on the combustion chamber side, which glow plug 21 projects with the projecting part into the combustion chamber
  • the glow plug 21 is in the present embodiment, a metallic glow tube in which an electric
  • Heating element 22 for example in the form of a heating coil is arranged, wherein the heating element 22 is connected to form a pole with the glow tube and to form the other pole with a GlühstromWallet 23.
  • the Glühstromcard 23 is at a combustion chamber facing away from the front side
  • the electronic module 12 has a contacting unit 40, which comprises a carrier 41 for receiving a signal processing unit 70, for example an ASIC, and the plug housing 16.
  • a contacting unit 40 which comprises a carrier 41 for receiving a signal processing unit 70, for example an ASIC, and the plug housing 16.
  • Plug housings 16 are made of an electrically insulating material
  • the contacting unit 40 extends in the axial longitudinal extent of the
  • the contacting unit 40 has an interface for contacting the annealing and pressure measuring module 11 on a glow module-side end face 43 of the carrier 41.
  • the interface is formed by on the glow module side end 43 formed, exposed glow module side sensor contacts 45 to
  • GlühstromWallets 23 formed, wherein the contacting of the pressure sensor 31 via sensor lines 17 and the contacting of the GlühstromWallets 23 via a Glühstrom effet 18 takes place.
  • sensor-side connecting lines 47 and connector-side connecting lines 48 are integrated. With a radial distance from the sensor side and plug side
  • connecting lines 47, 48 passes axially through the contacting unit 40 further comprises a high current line 49, the sensor side leads to the exposed high-current contact 46.
  • the high-current line 49 continues through the plug housing 16 through to a high-current connection for the glow current of the glow plug 20 at the plug connection 42.
  • the sensor-side and Plug-side connection lines 47, 48 and / or the high-current line 49 are expediently in the carrier 41 and in the connector housing 16th
  • connections of the signal processing unit 70 are contacted by means of electrical connections 19 in each case with the sensor-side connection lines 47 and connector-side connection lines 48.
  • the contacting unit 40 is further at least partially surrounded by the tubular electronic module housing 15, wherein the carrier 41 is completely and the connector housing 16 is partially surrounded by the electronic module housing 15.
  • an external thread 44 for screwing into a cylinder head of the internal combustion engine is present.
  • the electronics module housing 15 may be embodied in one piece or in several pieces.
  • the pressure measuring unit 30 is inside the glow module housing 14
  • Pressure measuring unit 20 has an internal diameter dl.
  • Pressure measuring unit 30 comprises a sensor unit 30 ', a flexurally elastic diaphragm 60, a clamping sleeve 66 and a sleeve-shaped transmission element 50.
  • the sensor unit 30 has a piezoelectric pressure sensor 31, a glow stick side pressure piece 32, a support member side pressure piece 33 and a support member 34, wherein the pressure sensor 31 between the glow pin side pressure piece 32 and the support member side pressure piece 33 is positioned and by means of the support member side pressure piece 33 on the support element 34 supported.
  • the support element 34 has first recesses 35 for the passage of the sensor lines 17 and a second recess 36 for the passage of the glow current line 18.
  • the sleeve-shaped transmission element 50 is arranged around an opening facing away from the combustion chamber of the glow plug 21 and fixedly connected to the glow plug 21.
  • the sleeve-shaped transmission element 50 has a hollow-cylindrical receiving space 51 on the glow pin side and a sensor-side one
  • Receiving space 51 and the sensor-side Druckmaschineme 51 is a stable partition 53 is formed with a sensor-side support surface 54.
  • In the receiving space 51 of the high-current contact 23 projects with its remote from the combustion chamber end.
  • Within the receiving space 51 is the
  • Pressure piece receptacle 52 is the glow pin-side pressure piece 32 is received, such that it rests with a glow pin-side pressure receiving surface 57 on the support surface 54 gap-free.
  • At least one radial opening 55 is provided, through which the
  • Glühstromtechnisch 18 is guided laterally outward. After the lateral guidance, the Glühstromtechnisch 18 substantially a 90 degree bend, so that the Glühstrom effet 18 in the direction of the high current contact 46 in
  • Lengthwise extension of the pressure measuring unit 30 is continued substantially axially. In the axial direction, the Glühstromtechnisch 18 between the
  • the flexurally elastic membrane 60 serving as a pressure transducer glow plug 21 is resiliently held within the Glühmodulgephaseuses 14.
  • the flexurally elastic membrane 60 has a glow pen side, inner
  • the Flexurally elastic membrane 60 is attached to the inner support portion 61 by means of a circumferential first weld 63 on an outer side 25 of the glow plug 21 and the outer support portion 62 by means of a single circumferential, second weld 64 on an inner side 26 of the Glümmodulgeophuses 14.
  • the second weld 64 thereby forms a single attachment point on the outer support portion 62 for fixing the annealing and pressure measuring module 1 1 within the Glühmodulgephinuses 14.
  • the clamping sleeve 66 connects the flexurally elastic membrane 60 and the
  • Clamping sleeve 66 is attached at one end to the elastic membrane 60, for example by means of a first weld 67 and the other end to the support member 34, for example by means of a second weld 68.
  • the receiving space 28 is sealed within the clamping sleeve 66 by means of the diaphragm 60 with respect to the combustion chamber of the internal combustion engine.
  • the clamping sleeve 66 in this case has an outer diameter D2, which is smaller than the outer diameter Dl of the outer support portion 62, so that the circumferential annular gap 69 between the inner diameter dl of the
  • the pressure sensor 31 is held in the sensor unit 30 'between the transmission element 50 and the support member 34 by means of a bias, wherein the bias of the spring force of the flexurally elastic diaphragm 60 is applied.
  • Pressure measuring unit 30 and the glow plug 20 contains and with the
  • Pressure transducer acting glow pin 21 exerts, causes due to the flexurally elastic membrane 60 of the glow plug 21 performs an axial movement relative to the housing 14 along the longitudinal axis.
  • Diaphragm 60 is resiliently formed with a flexural rigidity such that glow plug 21 can perform the required axial movement within housing 14 to transmit the pressure applied to glow plug 21 to pressure sensor 31.

Abstract

L'invention concerne une bougie de préchauffage à mesure de pression qui comprend un logement (13, 14) dans lequel sont disposés un crayon de préchauffage (21) conçu pour allumer un mélange de combustion de moteur à combustion interne ainsi qu'une unité de mesure de pression (30) destinée à détecter une pression dans la chambre de combustion du moteur à combustion interne. Le crayon de préchauffage (21) comprend un contact de courant de préchauffage (23) pour un élément de chauffage électrique (22). Un élément de transmission de pression (50) qui transmet la pression de la chambre de combustion s'appliquant sur le crayon de préchauffage (21) à l'unité de mesure de pression (30) est fixé sur l'extrémité du crayon de préchauffage (21) qui est opposée à la chambre de combustion. L'élément de transmission de pression (50) est configuré en forme d'enveloppe et forme, côté crayon de préchauffage, un espace de réception (51) pour le contact de courant de préchauffage (23) de l'élément de chauffage (22).
PCT/EP2013/051067 2012-02-10 2013-01-22 Bougie de préchauffage à mesure de pression WO2013117417A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP13701423.9A EP2812635B1 (fr) 2012-02-10 2013-01-22 Bougie de préchauffage à mesure de pression
JP2014555147A JP5893759B2 (ja) 2012-02-10 2013-01-22 圧力測定グロープラグ
CN201380008770.4A CN104094062B (zh) 2012-02-10 2013-01-22 压力测量预热塞
US14/377,771 US9541291B2 (en) 2012-02-10 2013-01-22 Pressure measuring glow plug

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012202061.6 2012-02-10
DE102012202061A DE102012202061A1 (de) 2012-02-10 2012-02-10 Druckmessglühkerze

Publications (1)

Publication Number Publication Date
WO2013117417A1 true WO2013117417A1 (fr) 2013-08-15

Family

ID=47605517

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/051067 WO2013117417A1 (fr) 2012-02-10 2013-01-22 Bougie de préchauffage à mesure de pression

Country Status (6)

Country Link
US (1) US9541291B2 (fr)
EP (1) EP2812635B1 (fr)
JP (1) JP5893759B2 (fr)
CN (1) CN104094062B (fr)
DE (1) DE102012202061A1 (fr)
WO (1) WO2013117417A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014206352A (ja) * 2013-04-16 2014-10-30 日本特殊陶業株式会社 燃焼圧センサ付きグロープラグ及びその製造方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011088468A1 (de) * 2011-12-14 2013-06-20 Robert Bosch Gmbh Druckmessglühkerze
JP5989410B2 (ja) * 2012-06-01 2016-09-07 日本特殊陶業株式会社 圧力センサ付きグロープラグ及びその製造方法
EP3287699A4 (fr) * 2015-04-21 2018-04-25 Bosch Corporation Bougie de préchauffage
US9957750B2 (en) * 2016-06-09 2018-05-01 Whole Space Industries Ltd Window covering positional adjustment apparatus
DE102016114929B4 (de) * 2016-08-11 2018-05-09 Borgwarner Ludwigsburg Gmbh Druckmessglühkerze

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006008351A1 (de) 2006-02-21 2007-08-23 Robert Bosch Gmbh Druckmesseinrichtung
DE102008041712A1 (de) * 2007-08-30 2009-03-05 Denso Corp., Kariya-shi Glühkerze mit Verbrennungsdrucksensor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004044727A1 (de) * 2003-09-19 2006-03-16 Beru Ag Druckmessglühkerze für einen Dieselmotor
DE10343521A1 (de) * 2003-09-19 2005-04-21 Beru Ag Druckmessglühkerze für einen Dieselmotor
DE102006008639A1 (de) * 2005-12-23 2007-06-28 Robert Bosch Gmbh Glühstiftkerze
JP2008020176A (ja) * 2006-06-14 2008-01-31 Ngk Spark Plug Co Ltd センサ内蔵グロープラグ
DE102006057627A1 (de) * 2006-12-05 2008-06-12 Robert Bosch Gmbh Druckmesseinrichtung
CN100464173C (zh) * 2007-03-26 2009-02-25 应城市新世纪摩托车配件有限责任公司 内燃机负压传感器
EP2138820B1 (fr) * 2008-06-25 2016-09-21 Sensata Technologies, Inc. Fiche de mesure de la pression piézorésistante pour un moteur à combustion
JP5360993B2 (ja) * 2009-10-21 2013-12-04 日本特殊陶業株式会社 圧力センサ付きグロープラグ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006008351A1 (de) 2006-02-21 2007-08-23 Robert Bosch Gmbh Druckmesseinrichtung
DE102008041712A1 (de) * 2007-08-30 2009-03-05 Denso Corp., Kariya-shi Glühkerze mit Verbrennungsdrucksensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014206352A (ja) * 2013-04-16 2014-10-30 日本特殊陶業株式会社 燃焼圧センサ付きグロープラグ及びその製造方法

Also Published As

Publication number Publication date
DE102012202061A1 (de) 2013-08-14
US20150013633A1 (en) 2015-01-15
EP2812635B1 (fr) 2019-05-15
JP2015506455A (ja) 2015-03-02
EP2812635A1 (fr) 2014-12-17
CN104094062B (zh) 2016-08-24
US9541291B2 (en) 2017-01-10
CN104094062A (zh) 2014-10-08
JP5893759B2 (ja) 2016-03-23

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